Postal security unit



FIG. 1 is a front, bottom, and left side perspective view of a postal security unit which incorporates the new design;

FIG. 2 is a bottom and back perspective view thereof;

FIG. 3 is a front, bottom and right side perspective view thereof;

FIG. 4 is a left side, bottom and back perspective view thereof;

FIG. 5 is a front, bottom and left side perspective view thereof;

FIG. 6 is front, top and right side perspective view thereof;

FIG. 7 is a top, back and left side perspective view thereof;

FIG. 8 is a top, back and left side perspective view thereof;

FIG. 9 is a top, back and right side perspective view thereof;

FIG. 10 is a top, front and right side perspective view thereof;

FIG. 11 is a top, back and right side perspective view thereof;

FIG. 12 is a bottom plan view of the unit shown in FIG. 5;

FIG. 13 is a top plan view of the unit shown in FIG. 6;

FIG. 14 is a left side elevational view of the unit shown in FIG. 7;

FIG. 15 is a right side elevational view of the unit shown in FIG. 6;

FIG. 16 is a back elevational view of the unit shown in FIG. 7; and,

FIG. 17 is a front elevational view of the unit shown in FIG. 6. 

The ornamental design for a postal security unit, as shown and described. 